A nurse is caring for a client who is taking digoxin to treat heart failure. Which of the following factors predisposes this client to developing digoxin toxicity?

Metformin is a medication used to lower blood glucose levels in people with type 2 diabetes. Metoprolol is a beta-blocker used to treat high blood pressure and heart problems. If the nurse accidentally gives metformin instead of metoprolol, the client may experience hypoglycemia (low blood sugar), which can cause symptoms such as sweating, shakiness, confusion, and loss of consciousness. Therefore, the nurse should check the client’s glucose level and treat hypoglycemia if needed.

Choice A is wrong because HDL (high-density lipoprotein) is a type of cholesterol that is not affected by metformin or metoprolol.

Choice B is wrong because thyroid function levels are not affected by metformin or metoprolol.

Choice C is wrong because uric acid level is not affected by metformin or metoprolol.

Uric acid is a waste product that can cause gout if it accumulates in the joints. Normal ranges for blood glucose are 70 to 130 mg/dL before meals and less than 180 mg/dL two hours after meals.

Normal ranges for HDL are 40 to 60 mg/dL for men and 50 to 60 mg/dL for women.

Normal ranges for thyroid function levels vary depending on the specific test, but generally they are between 0.4 and 4.0 mIU/L for TSH (thyroid-stimulating hormone), 4.5 to 11.2 mcg/dL for T4 (thyroxine), and 80 to 180 ng/dL for T3 (triiodothyronine).

Normal ranges for uric acid are 3.4 to 7.0 mg/dL for men and 2.4 to 6.0 mg/dL for women.

The most appropriate action for the nurse to take in this situation is:

d. Apply a warm, moist compress.

Here's why the other options are not recommended:

• a. Initiate a new IV distal to the initial site:This is not the first course of action. While starting a new IV might be necessary eventually, it's crucial to address the issue at the current site first.
• b. Slow the IV solution rate:Slowing the rate doesn't directly address the coolness and edema, which indicate potential infiltration or extravasation.
• c. Maintain the extremity below the level of the heart:This action would actually worsen the edema by promoting fluid accumulation at the site.

Applying a warm, moist compress can help promote absorption of any leaked fluid and improve circulation at the site. However, it's important to remember that this is just one step in the process. The nurse should also:

• Stop the IV infusion.
• Assess the extent of the infiltration or extravasation.
• Document the findings.
• Elevate the affected extremity.
• Consult with a physician for further instructions and potential treatment.